In 1958, I bought 3 different Impala's...One
had a 283 small block, the other two had 348's and
was very strong, trouble free engines...1959 I owned
a 409 Biscayne with tri-power...1969 I bought a new
Chev. Camper special with a 396 in it...Never had a
problem with any big blocks...I had a 400 ci small
block in a 1978 GMC that I didn't care for much...It
started blowing smoke on start-up..(Valve seals) In
My estimation it was over-bored, causing the engine
to run hotter...I am a real fan of the 327's...I
had a 62 Impala SS coupe with 300 HP that was a
missile on wheels...Bill B